Australian Solar Electricity contribution reaches 9.4 percent
Australian Solar Electricity Contribution reaches 9.4% of electricity demand
Also in this series: Australian PV Contribution reaches 9.4% of electricity demand
3GW of PV – When, where and how: System sizing, pricing, and distribution
3GW of PV – which companies are leading residential and commercial PV
PV in the NEM – quite an impact
We’re kicking off our free Insights mini-series with an special feature from last month’s subscription, which takes a look at the contribution of solar power to the National Electricity Market. Hitherto it was uncertain how much solar power was contributing to electricity demand, because the ‘behind the meter’ nature of net-metered solar power systems means their production simply appears as ‘negative load’. Now by combining some publicly available resources, we can clearly see that PV is having a non-trivial midday impact, and in some circumstances representing more than one quarter of power consumption. Remember, this free release of Insights data is a once-off to celebrate the 3GW milestone being reached. To obtain such insights on a monthly basis, you’ll need to subscribe from $275/month.
Through work contributing to the APVA’s Development of an Australian Solar Map”, over a six month period SunWiz recorded an aggregated feed from thousands of real-time monitored PV systems (via PVoutput.org), and multiplied it by the CER-reported volume of solar capacity at the time, and then divided it by the AEMO-published electricity consumption volumes in the National Electricity Market. SunWiz assisted the APVI with the ARENA-Funded Project “Development of an Australian Solar Map”, which presents a live view of similar information – this ARENA-funded website produced by the APVI provides live information on Australia’s solar contribution, alongside noteworthy historical events.
This graph shows the proportion of NEM consumption in each state that was met by solar in each hour of the day across the period February-September 2013. The blue line shows the maximum contribution and the orange line shows the maximum contribution. You can see that contribution of solar power in SA reaches over 28% at some points in the sample period, and there is a healthy average of 11% midday contribution. Queensland’s solar power systems are contributing an average of 7% of NEM demand, an reaching up to 12% on some days. Contribution is lower in Victoria and New South Wales, and lower still in South Australia.
It is worth noting that there are inaccuracies that derive from the methodology: state-wide live performance data from PVoutput.org was captured and then multiplied by the amount of solar capacity installed at the time, then divided by the sum of NEM consumption and solar output to reach the proportion of the NEM produced by solar. As a result there are some obvious data anomalies due to errant system recordings after dark in PVoutput.org. Its worth noting that PVoutput.org users produce higher than average performance, and that solar production includes all systems, whether NEM connected or not. Balancing these factors is the fact that capacity data lags installed capacity.
The graph below shows all data points for each state over the sample period. Clearly SA and Queenland have the largest solar contributions. Interestingly, Queensland has a period of reliably-high solar contribution over the months of August and September. After dipping through the winter months, it is clear that contribution is increasing in most states; a function of the weather and of continued installations adding further power generation capacity.
In terms of energy contribution (as opposed to midday power output), solar power contributed 1-2% of NEM energy requirements each month, but this varies considerably by state. The graph below shows the monthly contribution of solar power to NEM energy consumption in each state, with almost 5% of South Australia’s NEM energy consumption being provided for by solar power.
Applying this information to September’s Solar Sunday, we can see that Queensland Victoria and South Australia had coincident days of maximum solar contributions to NEM consumption (28%, 7% and 12% respectively), and NSW was close to its best. At least part of the reason for the extraordinary solar contribution to NEM consumption was that consumption is low on Sundays. It certainly helped that each state other than Tasmania had coincident upper-quartile solar production – in other words it was sunny across the whole NEM at once.
This extraordinary information is an example of the special feature that SunWiz puts into edition of Insights. Past special features have included: Solar Hot Spots, Global Demand, best presentations of Clean Energy Week & Intersolar, PVoutput.org, best STP graphs, Perth Solar Cities, Out-of-Pocket Expenses, 2013 Wrap –Insights will surprise you with the valuable knowledge it turns up each month.
Still to come in this mini-series, we will look at common system sizes, pricing, large-scale systems, market share, and SunWiz exclusive content.
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- Monthly market data provides the ability to track your market share on a per-state level.
- Monthly market data also reveals growth or contraction in the market.
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Indeed, many foreign PV manufacturers based in Australia have been fed up with the garbage figures on the Australian market their global head offices were being fed by SunWiz’s international competitors. They use Insights to show their head office what’s really happening in Australia. When the global CEO of a large Australian PV company visited the country, SunWiz was flown down to Melbourne to speak with him personally.
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- APVI study explained: from base case of $1735/year electricity spend, installing an AC will raise your spend to… http://t.co/6AXlEEMYIo
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- Time to get facts right on solar, and reap the benefits – Centre for Policy Development and APVI http://t.co/l3NCvMfAmF
- RT @renew_economy: CEFC saved in the Senate – a rare win for Australian renewables http://t.co/nZfdcBCJ8l #solar #wind
- RT @SimonChapman6: God takes a selfie http://t.co/664s5ZIRUJ
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